{"id":62126,"date":"2018-10-19T11:04:37","date_gmt":"2018-10-19T09:04:37","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/?p=62126"},"modified":"2018-10-30T16:10:12","modified_gmt":"2018-10-30T15:10:12","slug":"tu-cara-proviene-de-la-parte-posterior-de-tu-cabeza","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/es\/tu-cara-proviene-de-la-parte-posterior-de-tu-cabeza\/","title":{"rendered":"Tu cara proviene de la parte posterior de tu cabeza"},"content":{"rendered":"
Izquierda: c\u00e9lulas de la cresta neural migrando colectivamente durante la morfog\u00e9nesis en la cabeza; a la derecha, una recreaci\u00f3n de c\u00f3mo las c\u00e9lulas son empujadas hacia adelante desde la parte posterior del cr\u00e1neo, como al presionar la pasta de un tubo de pasta dental.<\/h6>\n

\u00abEn el \u00fatero, las c\u00e9lulas de la cresta neural del embri\u00f3n se deslizan desde la parte posterior hasta la parte frontal de la cabeza para formar la cara\u00bb, dice el Prof. Roberto Mayor, del departamento de Biolog\u00eda Celular y del Desarrollo del University College London<\/a>, cuyo grupo realiz\u00f3 el estudio publicado hoy en Science junto al investigador principal del IBEC y profesor ICREA Xavier Trepat<\/a>. \u00abPor primera vez, hemos identificado c\u00f3mo ocurre esta migraci\u00f3n: parece ser similar a la forma en que apretar\u00edas la pasta de dientes desde la parte posterior del tubo para mover el contenido hacia delante\u00bb.<\/p>\n

Hist\u00f3ricamente, el movimiento de estas c\u00e9lulas se hab\u00eda explicado como si se tratara de un tren: con una \u201clocomotora\u201d en la parte delantera que genera fuerza y empuja al resto del tren hacia adelante. El nuevo descubrimiento desaf\u00eda esta visi\u00f3n, al mostrar que el motor que mueve las c\u00e9lulas de la cresta neural se encuentra en la parte posterior y no en la delantera. El hallazgo puede ser de ayuda para evitar malformaciones faciales, mejorar la cicatrizaci\u00f3n de heridas o inhibir la met\u00e1stasis del c\u00e1ncer, ya que cualquier modificaci\u00f3n del movimiento celular debe centrarse en modificar las c\u00e9lulas de la parte trasera en lugar de las l\u00edderes.<\/p>\n

Para el estudio, los investigadores trabajaron con embriones de ranas y de pez, porque las c\u00e9lulas de su cresta neural se comportan de manera similar a las humanas y su movimiento se usa a menudo para estudiar la expansi\u00f3n del c\u00e1ncer. Adem\u00e1s, se puede estudiar el desarrollo de embriones de ranas y peces sin causarles da\u00f1o.<\/p>\n

El equipo utiliz\u00f3 un haz de luz para controlar al grupo de c\u00e9lulas madre neurales \u2013 activando su contracci\u00f3n mediante optogen\u00e9tica. Tras observar que el grupo de c\u00e9lulas est\u00e1 rodeado por un cable de proteina que se contrae y las empuja a avanzar, determinaron que es en particular la contracci\u00f3n de las c\u00e9lulas posteriores la que dirige el avance de todo el grupo. \u201cLas herramientas optogen\u00e9ticas nos permitieron contraer selectivamente las c\u00e9lulas posteriores del grupo, para demostrar que son esas c\u00e9lulas las encargadas de liderar la migraci\u00f3n colectiva que acaba formando la cara\u201d, comenta en Prof. Trepat. \u00abEste es un gran ejemplo de organizaci\u00f3n supra-celular, donde un grupo de c\u00e9lulas se comporta de manera coordinada, como si fueran una sola\u00bb, a\u00f1ade.<\/p>\n

El estudio es el resultado de una colaboraci\u00f3n entre investigadores de la UCL y del Instituto de Bioingenier\u00eda de Catalu\u00f1a (IBEC), miembro del BIST (Barcelona Institute of Science and Technology<\/a>). Ha sido financiado por el Medical Research Council, el Biotechnology and Biological Sciences Research Council, el Wellcome Trust, la Comisi\u00f3n Europea, el ERC, el MINECO, la Generalitat de Catalunya y el CIBER-BBN.<\/p>\n

—<\/p>\n

Source article:<\/strong> Adam Shellard, Andr\u00e1s Szab\u00f3, Xavier Trepat & Roberto Mayor (2018). Supracellular contraction at the rear of neural crest cell groups drives collective chemotaxis<\/a>. Science<\/em>, Vol. 362, Issue 6412, pp. 339-343<\/p>\n","protected":false},"excerpt":{"rendered":"

\"\"Las c\u00e9lulas madre embrionarias que dan forma a la cara (c\u00e9lulas de la cresta neural) utilizan un mecanismo inesperado para desarrollar las caracter\u00edsticas faciales, seg\u00fan revela un nuevo estudio dirigido por la UCL que involucra a investigadores del IBEC.<\/h3>\n

Los investigadores han descifrado c\u00f3mo se mueven estas c\u00e9lulas, pudiendo ayudar a comprender c\u00f3mo ocurren los defectos faciales, como el paladar hendido y la par\u00e1lisis facial.<\/p>\n

El mecanismo reci\u00e9n descrito podr\u00eda ser relevante para el desarrollo de nuevas terapias, dado que podr\u00eda estar detr\u00e1s de otros procesos de migraci\u00f3n celular, como la invasi\u00f3n del c\u00e1ncer durante la met\u00e1stasis o la cicatrizaci\u00f3n de heridas.<\/p>\n","protected":false},"author":4,"featured_media":62110,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[97],"tags":[],"post_formats":[],"class_list":["post-62126","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticias-de-investigacion"],"yoast_head":"\nTu cara proviene de la parte posterior de tu cabeza - Institute for Bioengineering of Catalonia<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ibecbarcelona.eu\/es\/tu-cara-proviene-de-la-parte-posterior-de-tu-cabeza\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tu cara proviene de la parte posterior de tu cabeza - Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"og:description\" content=\"Las c\u00e9lulas madre embrionarias que dan forma a la cara (c\u00e9lulas de la cresta neural) utilizan un mecanismo inesperado para desarrollar las caracter\u00edsticas faciales, seg\u00fan revela un nuevo estudio dirigido por la UCL que involucra a investigadores del IBEC. 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